Authors Robert Szumski - Central Office of Measures (Główny Urząd Miar)
The article presents the modernization of an interference comparator for calibrating long gauge blocks with a measuring range of up to 500 mm. The measuring system has been extended with the possibility of performing measurements using the exact fractions method.
[1] A. J. Lewis: Absolute length measurement using multiple wavelength phase-stepping interferometry. PhD Thesis. University of London (1993).
[2] Y. Bitou, A. Hirai, H. Yoshimori, F. Hong, Y. Zhang, A. Onae, K. Seta: Gauge block interferometer using three frequen-
cy-stabilized lasers. Proc. SPIE 4401 (2001), 288‑297.
[3] O. Iwasińska-Kowalska, M. Dobosz: A new method of noncontact gauge block calibration using the fringe counting technique: II. Experimental verification. Optics & Laser Technology, vol. 42 (2010), p. 149.
[4] E. Ikonen, K. Riski: Gauge-block interferometer based on one stabilized laser and a white-light source. Metrologia, vol. 30 (1993), p. 95.
